            <h3 class="box-title ">
              最近30天内订单统计 
            </h3>
            <div class="table-responsive">
              <table class="table table-striped" id="dataTable" >
                <thead>
                  <tr>
                    <th>订单数量</th>
                    <th>时间</th>
                  </tr>
                </thead>
                <tbody>
                  <% @order_charts.each do |order| %>
                  <tr>
                    <td><%= order.day_count %></td>
                    <td><%= order.sell_date.strftime("%Y-%m-%d") %></td>
                  </tr>
                  <% end %>
                </tbody>
              </table>
            </div>
<hr>            